First Last, il 07/01/2011 20:55, ha scritto:
Hi,
is OpenBitSet / SortedVIntList a compressed bit map index? Which one is
better if memory usage is the primary concern ?
SortedVIntList is compressed, OpenBitSet is not
Our filters are sparse. So is SortedVIntList better in that case?
Yes
Are there any other compressed bitmap index implementations which offer bit
map compression at a decent performance assuming filters are sparse?
I'm too looking for alternative implementations of compressed bitsets,
so I'm too really interested in everybody experience: my primary concern
at the moment is serializing bitsets to recover searcher warmup time
I've tried some and roughly tested them: my conclusion was that we
(lucene users) already stand on the rolls royce of bitset implementations.
federico
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